Charles l



(No Model.) O. L JAEGER.

GOVERNOR FOR ELECTRIC. MOTORS.

No. 415,641 Patented Nov. 19, 1889.

S EL S S M H W vl nu A TTORNE YS UNITED STATES PATENT OEEICE.

VcHAELEs L. JAEGER, or NEW YORK, N. Y.

GOVERNOR FOR ELECTRIC MOTORS.

SPECIFICATION forming part of Letters Patent No. 415,641, dated November 19, 1889.

l Application filed August 29, 1889. Serial No. 322,304. (No model.)

To all whom it may concern:

Be it known that I, CHARLES L. J AEGEE, a citizen of the United States, residing at New York, in the county and State of New York, have invented new and useful Improvements in Governors for Electric Motors, of which the following is a specification.

This invention has relation to an electricmotor governor, the object being to provide an electrical device or devices to be used in connection with a centrifugal or other inechanical governorin such a manner that as the variations of the speed of the electric motor shall affect the mechanical governor it in turn shall vary the force of the electric current which actuates the motor. The peculiar and novel construction of my governor is pointed out in the following specification and claims, and illustrated in the accompanying drawings, in which# Figure l represents a front elevation. Fig. 2 is a horizontal section in the plane Qc x, Fig. 1. Fig. 3 is a vertical section in the plane y y, Fig. 2.

Similar letters indicate corresponding parts. In the drawings, the letter A designates a disk,which may be made of wood or anyother suitable material, and which is mounted on a stud a, secured in a standard B. In the face of this disk,lout carefully insulated from the same and from each other, are fitted a series of metallic contact-pieces C C C2 C3 C5 C6, dac., the surfaces of which are Hush with the surface of the disk.

D is a metallic ring fitted upon the circumference of the disk A and provided with a break d. This ring is in metallic contact with the contact-piece C, but it is insulated from all the other contact-pieces C C2, ttc. All the contact-pieces, with the exception of those marked C31 and C, are connected by resistances E, and themetallic ring D bears against a metallic shoe F,whch connects bya wire 10 with one-say the positive-pole of an electric generator. On the outer end of the stud ct is tted a lever G, one end of which engages the sleeve H of the mechanical governor I, so that by the rising and falling movement of this sleeve an oscillating motion is imparted to the lever G. On this lever, but insulated from the same and from the stud a, is iirmly secured a metallic contact-arm J, from which extends a brush j, which in the example shown in the drawings is made of sheet metal and bears upon the surface of the disk A, Figs. 2 and 3. The contact-arm J connects by awire 1l with the negative pole of the electric generator,.and the circuit of the wires l0 and ll includes. an electric motor (not shown in the drawings) from which motion is imparted to the governor I. In the position represented by the drawings the electric current passes from the electric generator through wire l0, friction-shoe F, and metallic rimD to the contact-piece C, thence through the resistances E E to contact-piece OS, as indicated by arrows l, thence through the brush j t-o the contactarm J, thence through wire 1l to the electric motor, and from this to the negative pole of the battery. If the speed of the electric inotor increases, the sleeve Il of the governor I is moved up and the brush j of the contactarm J is moved from the contact-piece CS to the contact-piece C. By this movement an additional resistanceE is thrown into the circuit, the force of the electric current which actuates the electric motor is reduced, and as the speed of this motor diminishes the sleeve Il moves down and the lever G is returned to its normal position.

The disk A is provided with a handle K, so that it can be turned on the stud d., and thereby the disk can be adj usted to the force of the electric current-that is to say, it can be adjusted so as to compel the electric current to pass more or less of the resistances E before it reaches the electric motor.

The resistances E should in practice have a coil at the bends adjacent to the base or support A, for if made without a coil they would soon be burned.

That I claim as new, and desire to secure by Letters Patent, is

l. In a governor for electric motors, the combination, with a mechanical governor, of the movable base or support A, provided with contact-pieces C C C2, duc., and resistances E E, the metallic ring D, secured to said base or support and in metallic contact with one of the contact-pieces C, the contact-arm J, connected to the governor, and suitable connections with an electric generator,substantially as described. A

2. In a governor for electric motors, the combination, with a mechanical governor, of the In testimony whereof I have hereunto set movable disk A, provided with contact-pieces my hand in the presence of two Subscribing lo C C G2, &c., and resistances E E, the metal- Witnesses.

lic ring D, secured to said disk and in metalfi- P LLi. 11o Contact with one of the contact-pieces C, CH RLL L IAFGTR Jche contact-armJ, connected to the governor, VtncSSQS:

and suitable connections Withan electric gow lV. C. HAUFF,

erator, substantially as described. W. UAUFF. 

